1/4''-24'',13mm-610mm,carbon steel pipe welded ... pipe StandardASTM A106 GRB/API5LGRB/ASTMA53GRB DIN ANSI GB SH HG APIMaterialGRB20#STEEL,A3,A234,ASTM,Q235,Q345,10 ... D48.3-114.3mm,+-0.79%,D>114.3mm +-1.59/-0.79mmWT ToleranceWT+-12.5%ChemicalC:<0.30 ... %,SI:>0.10%,MN:0.29-1.06%,P:<0.035%,S:<0.035%,Cu:<0 ... high security, highly pressurized, widely usedMin order3 tons 1/4''-24'' carbon steel pipe